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dc.contributor.authorSiripen Puavilaien_US
dc.contributor.authorSkowrat Kunavisaruten_US
dc.contributor.authorMongkol Vatanasuken_US
dc.contributor.authorPenwadee Timpatanapongen_US
dc.contributor.authorSuwitcha T. Sriwongen_US
dc.contributor.authorSuchela Janwitayanujiten_US
dc.contributor.authorKanokrat Nantirujen_US
dc.contributor.authorKitti Totemchokchyakarnen_US
dc.contributor.authorSuwanna Ruangkanchanasetren_US
dc.contributor.otherMahidol Universityen_US
dc.contributor.otherFaculty of Medicine, Ramathibodi Hospital, Mahidol Universityen_US
dc.identifier.citationInternational Journal of Dermatology. Vol.38, No.12 (1999), 934-937en_US
dc.description.abstractBackground: Chloroquine has been prescribed for the treatment of various diseases. The most serious side-effect of chloroquine is retinopathy. The frequency of occurrence of retinopathy varies from 0.001 to 40% depending on the criteria used. The purpose of this study was to evaluate the incidence of ocular toxicity from chloroquine treatment among Thai patients. Methods: A retrospective study was carried out in patients treated with chloroquine at Ramathibodi Hospital over the past 10 years (1987-1997). Patients eligible for review were followed by ophthalmic examination by an ophthalmologist for at least 6 months after starting treatment. Results: One hundred and fifty- five patients were studied. Nineteen were men and 136 were women. They ranged in age from 10 to 70 years. Most patients received 250 mg of chloroquine per day. The duration of treatment varied from 6 months to 14 years, and the cumulative dose of chloroquine ranged from 26 to 1771 g. Fourteen patients (9%) had only corneal deposition, while 22 (14.2%) developed retinopathy. There were no correlations between corneal deposits or retinopathy and age, sex, duration of treatment, or cumulative dose of chloroquine. Conclusions: The present study confirms the finding reported by Mackenzie (Am J Med 1983; 75 (Suppl 1A): 40-45) that retinopathy is not related to the duration of treatment and cumulative dose of chloroquine. Based on our finding that retinopathy can be detected as early as 9 months after starting chloroquine therapy, we recommend routine ophthalmic examination before treatment and every 6 months thereafter.en_US
dc.rightsMahidol Universityen_US
dc.titleOcular toxicity of chloroquine among Thai patientsen_US
Appears in Collections:Scopus 1991-2000

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